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CVE-2021-42027

Quick assessment

Affected
Siemens SINUMERIK Edge
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Siemens SINUMERIK是德国西门子（Siemens）公司的一套控制系统。适用于所有生产领域。 Siemens SINUMERIK Edge（所有版本 < V3.2）中存在信任管理问题漏洞，该漏洞源于启动 TLS 连接时，受影响的软件无法正确验证服务器证书。这可能允许攻击者通过干扰客户端和预期服务器之间的通信路径来欺骗受信任的实体。

AI Predicted 8.1 Difficulty: Easy EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2021-42027

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2). The affected software does not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity by interfering in the communication path between the client and the intended server.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SINUMERIK 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SINUMERIK是德国西门子（Siemens）公司的一套控制系统。适用于所有生产领域。 Siemens SINUMERIK Edge（所有版本 < V3.2）中存在信任管理问题漏洞，该漏洞源于启动 TLS 连接时，受影响的软件无法正确验证服务器证书。这可能允许攻击者通过干扰客户端和预期服务器之间的通信路径来欺骗受信任的实体。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Siemens SINUMERIK Edge All versions < V3.2 -

II. Public POCs for CVE-2021-42027

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III. Intelligence Information for CVE-2021-42027

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Vendor Advisories for CVE-2021-42027 (1)

Same Patch Batch · Siemens · 2021-12-14 · 46 CVEs total

CVE-2021-44002 7.8 HIGH Siemens JT2GO和Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-44014 7.8 HIGH Siemens JT2GO 资源管理错误漏洞
CVE-2021-44440 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44446 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44449 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44450 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44522 Siemens SiPass Integrated和Siveillance Identity 安全漏洞
CVE-2021-44523 Siemens SiPass Integrated和Siveillance Identity 安全漏洞
CVE-2021-44524 Siemens SiPass Integrated和Siveillance Identity 授权问题漏洞
CVE-2021-44448 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44442 Siemens JT Utilities 安全漏洞
CVE-2021-44441 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44443 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44439 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44438 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44437 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44436 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44435 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44434 Siemens JT Utilities 缓冲区错误漏洞
CVE-2021-44433 Siemens JT Utilities 资源管理错误漏洞

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Siemens
Same weakness: CWE-295

V. Comments for CVE-2021-42027

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